Took my truck in because I kept getting the check engine light on indicating a "misfire in cylinder #3" code. Well, I was hoping it was something simple like a bad plug, wire, cap, coil, any damn thing but what they found! He came in and stated that the compression in cylinder 3 was 90 lbs and that it should be 158 (the rest were around that number) and that the most probable cause was...a cracked head! Are they right? They want big $$$ to fix. Would that cause a misfire?

 

Yea that sounds about right. The magnum motors are known for the heads cracking.

 

dont let them do it! do it yourself lol. much cheaper

 

Yes, you can probably do it cheaper than the dealer.

Did they do a leak-down test?

 

Don't rule out a blown gasket ... yet.

 

as stated above....stay away from the dealer.....even if you dont want to do it yourself, go somewhere else, it WILL be cheaper... the dealership will charge a pissload more, and most likely screw it up to have you come back for them to "fix" another problem....i know from experience

 

thats why we call it a stealership.

 

That's kinda ironic, I have a miss in my truck to, it's #5 cylinder lol, though the cause of mine is just worn out rings witch I think isn't bad considering the 300,000 miles lol. But the 408 stroker is getting closer to being installed!!!

 

And i'd check the compression on that cylinder myself,Everytime ive got the code misfire on a clyinder, all three custormers trucks were missing on a cylinder to All were bad injectors on that cylinder.I keep hearing bout heads cracking yet to see one besides that if the heads cracked like a headgasket water is gonna go in the oil or out the exhaust Just my 2 cents

 

No offense dude, but that was painful to read. A little slacking on punctuation is fine, but the almost complete lack of it combined with broken sentences really was quite hard on the poor brain to decipher.

Translation for others who don't want to decipher it: